Just adding ... it would be good to know exactly what those non-closed polygons are - fill zones, cutouts, etc. From there if we also know what the specific defect is then we can decide how to fix it. There are a few instances where I was never comfortable with how we've handled things, for example: board outline with arcs not a multiple of 90 degrees, or 2 tangent arcs, often produces geometry that is not quite closed. In the case of the board outline we use a "close enough" algorithm to join the dots but the reality is that our representation of the information provides no guarantee that what we are doing meets the design intent. I was dreaming of having a basic 2D geometry engine to help tackle all these related problems, but I never had the time to develop my ideas.
Cirilo On Thu, Sep 3, 2020 at 12:52 PM Seth Hillbrand <s...@kipro-pcb.com> wrote: > It would be helpful if you could generate a minimal example file where a > polygon is not closed and create a bug report with that file. To my > knowledge, polygons are closed in the dxf plotter (at least the code is > written in such a way as to attempt to do this). > > We do not yet support real drill outlines in the plotter. We've added > this to the printer and could probably do the same for the plotter. Here, > again it will be helpful to submit a bug report requesting this feature. > > Multiple layers in a single dxf has already been requested but has not yet > been implemented (https://gitlab.com/kicad/code/kicad/-/issues/2526) > > Best- > Seth > > On Wed, Sep 2, 2020 at 4:17 PM Andrew Zonenberg < > azonenb...@drawersteak.com> wrote: > >> Hi, >> >> Kicad's DXF export seems to be broken, causing many tools (such as the >> Sonnet field solver) to not import layouts correctly. >> I contacted Sonnet support and they did some digging; it seems like >> KiCAD is producing malformed DXFs that have non-closed polygons in them. >> >> I've also encountered two other problems getting KiCAD designs into >> Sonnet: >> >> 1) Sonnet's DXF import expects a *single* DXF, with one drawing layer >> per PCB/via layer. KiCAD generates one DXF per layer and I don't think >> there is currently a way to do a multilayer export. This isn't a fatal >> problem as I can just do multiple imports, but it's annoying. >> >> 2) More seriously, There does not seem to be any way to get via drill >> *outlines* in DXF format. The "drill map" file just has an X at each via >> location which is useless when trying to import layout into an external >> tool. >> >> Anybody have suggestions on how to proceed, or interested in helping to >> fix this? I'm not super familiar with the DXF file format although back >> in the v4.x days I did do some work on the microvia/blind via Excellon >> drill export code so I've done at least a little bit of work there. >> >> Andrew >> >> _______________________________________________ >> Mailing list: https://launchpad.net/~kicad-developers >> Post to : kicad-developers@lists.launchpad.net >> Unsubscribe : https://launchpad.net/~kicad-developers >> More help : https://help.launchpad.net/ListHelp >> > > > -- > [image: KiCad Services Corporation Logo] > Seth Hillbrand > *Lead Developer* > +1-530-302-5483 <+12126039372> > Davis, CA > www.kipro-pcb.com i...@kipro-pcb.com > _______________________________________________ > Mailing list: https://launchpad.net/~kicad-developers > Post to : kicad-developers@lists.launchpad.net > Unsubscribe : https://launchpad.net/~kicad-developers > More help : https://help.launchpad.net/ListHelp >
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